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Device and method for driving mini projector

A driving device and projector technology, applied in the field of projection display, can solve problems affecting visual effects, loss of light source contrast, etc., to achieve the effects of ensuring visual effects, prolonging life, and high accuracy

Inactive Publication Date: 2010-07-28
SHANGHAI SANXIN TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] However, if you reduce the power consumption of the light source, you will usually lose a certain amount of contrast, which will affect the visual effect.

Method used

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  • Device and method for driving mini projector
  • Device and method for driving mini projector
  • Device and method for driving mini projector

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Experimental program
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Embodiment Construction

[0029] In the following description, many technical details are proposed in order to enable readers to better understand the application. However, those skilled in the art can understand that without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0030] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the implementation of the present invention in detail in conjunction with the accompanying drawings.

[0031] The first embodiment of the present invention relates to a drive device. The driving device is used in a display device, the display device includes a light modulator for displaying images and a light source for irradiating light to the light modulator, and the driving device is used for controlling the light source and driving the light mo...

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Abstract

The invention relates to the field of projection display, and discloses a device and a method for driving a mini projector. In the driving device, pixels at specific positions of a front image and a back image are compared, the light quantity of a light source is adjusted according to the comparison result, so that the images in different contrast needs are not always displayed with the highest light quantity, the electricity is saved on the premise of ensuring the visual effect, and the service life of the battery of the portable mini projector is prolonged. Compared with the video image, the still image is displayed by using the driving light source with a higher power; and after the image is segmented, the pixels participating in comparison are randomly selected from each area, so that not only the computation is greatly reduced, but also the accuracy is quite high.

Description

technical field [0001] The invention relates to the field of projection display, in particular to the driving technology of a miniature projector. Background technique [0002] A micro-projector is a portable device with the size of a cigarette case. It uses a certain amount of light emitted by a light source to enlarge and project the image generated in a display device such as a light modulator to the front screen. [0003] If such a micro-projection device is to be embedded in a mobile device such as a mobile phone, its service time will be greatly limited due to the capacity limitation of the rechargeable battery. In order to increase the use of the mobile device, the method of increasing the battery capacity can be adopted, but this method will lead to an increase in its volume and weight. [0004] Another approach is to reduce the power consumption of various components of mobile devices. Among the components, the optical engine, which is the core component of the mi...

Claims

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Application Information

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IPC IPC(8): G03B21/00G03B21/20H05B41/38H05B41/14H04N9/31
CPCH04N9/3173H04N9/3197G03B21/12H04N9/312G03B21/14G03B21/2053
Inventor 权星泽金东侠金城守
Owner SHANGHAI SANXIN TECH DEV
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